Caster-retaining device.



D. A. MAGGUAIG. GASTER RETAINING DEVICE. 'APPLIOATION FILED AUG-.26,1908. v

921 132." Patented May 11,1909.

ZSHBETS-SHEET 1.

D; A. MAGGUAIG. ULSTER RETAINING DEVICE.

APPLICATION 1 1mm AUG. 2a, 1908,

Patented May 11, l909.

2 T W E H i 4 m 3 n n I u 0n lwwmoa garner enric DUNCAN A. MAOOUAIG, orNEBRASKA CITY, NEBRASKA.

(EASTER-RETAINING DEVICE.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed August 2c, 1908. Serial No. 450,331.

To all whom it may concern."

Be it known that I, DUNCAN A. MAooUAIe,

a citizen of the United States, residing at Nebraska City, in the countyof Otoe and State of Nebraska, have invented a new and usefulCaster-Retaining- Device, of which the following is a specification.

The primary object of the present invention is to provide a retainingdevice particularly useful in connection with casters for metal beds,and the like, though not necessarily limited to such use, and which issimple, inexpensive and very effective in its holding action.

A further object is to provide a retaining device, which. can beemployed in connection with an ordinary caster'pintle, is provided witha plurality of bearing elements, and is sufficiently yieldable to enterasocket and pass any obstructions-or roughness due to irregularities inthe walls of the socket.

Several embodiments of the invention are disclosed in the accompanyingdrawings, wherein t Figure 1 is a perspective view of a caster, showingone form of the retaining device applied thereto. Fig. 2 is a verticallongitudinal sectional view through the caster. Fig. 3 is a perspectiveview of the retaining de vice per .96. Fig. 4 is a horizontal sectionalview on the line 44 of Fig. 2. Fig. 5 is a perspective view of a castershowing a slightly modified form of retaining device thereon. Fig. 6 isa longitudinal sectional view through the structure disclosed in Fig. 5.Fig. 7 is a perspective view of the retaining device removed from thecaster. Fig. 8 is a top plan view of the structure disclosed in Fig. 5.Fig. 9 is a perspective view of still another embodiment of theinvention. Fig. 10 is a detail perspective view of the wire element ofthe retaining device disclosed in Fig. 9. Fig. -1 1' isacross sectionalview through the structure disclosed in Fig. 9. Fig. 12 is a detailvertical sectional view substantially on the line 12-12 of Fig. 11.

Similar reference numerals designate corresponding parts in all thefigures of the drawings.

Referring first to the embodiment disclosed in Figs. 1-4 inclusive, acaster intle 13 is employed, which is secured at its ower end to theusual yoke 14, in which the roller .15 is journaled. A washer 16 islocated over the connection between the said pintle and yoke, whileanother washer 17 is located upon the free end of the pintle 13, and isheld end, as-illustrated at 18. Interposed between the washers 16 and 17is the retaining device, which is formed from a single piece of wirebent into the form disclosed in Fig." 3. That is to say, oppositelydisposed open sided loops '19 surround the outer end of the pintle justbeneath the washer 17, and correspondingly shaped loops surround theinner end of the pintle adjacent to the washer 16. It will be notedthatthese sets of loops are disposed in angular relation, that is tosay, the closed ends of the loops l9 engage different sides of thepintle 13 to those engaged by the closed ends of the loops 20.Connecting the ends of the loops 19 and 20 are retaining arms 21,which-are thus disposed longitudinally of the pintle in spaced relationto the same, and on different sides thereof. It will be evident thatthisretaining device is ex ceedingly simple in its character, and can becheaply manufactured, and applied to a caster pintle. It is securelyretained in place, however, and has suflicient yielding action to permitthe caster to be ap )lied to anarticle of furniture, as-it will'readilyenter the socket to receive it. ie hen in position, however, it properlycenters the caster pintle in the socket, and inasmuch as it has fourarms 21 that engage the walls of the socket, the caster will beeffectively held in position.

A slightly different form of construction is disclosed in Figs. 5-8inclusive. In this embodiment of the invention the caster pintle, whichis designated 22, has opposite outstanding lugs 23 formed upon its freeend. The retaining device is formed from a single piece of wire, and ingeneral outline corre sponds to the above described embodiment of theinvention, that is to say, it is provided with an upper set ofoppositely disposed loops 24 arranged in overlapping relation and alower set of oppositely disposed loops 25 also arranged in overlappingrelation. The loops of the different sets are connected by retainingarms 26 disposed longitudinally of the pintle 22 in spaced relation tosaid pintle. In this construction, however, it will be noted that theuppermost loop 24 has its opposite sides pinched substantially together,as shown at 27, forming practically a closed loop that abuts against theprojections or against detachment thereon by upsetting said v lugs 23and prevents the detachment of the retaining device from the pintle.This structure operates the same as and has all the advantages of thefirst described embodiment.

In Figs. 9-12 inclusive, still another form of construction isdisclosed; In this embodiment, the caster pintle 28 has an enlargedupper end 29. The retaining device comprises a body formed of a singlepiece of Wire having upper oppositely disposed loops 30 and 31, whichsurround the upper end of the pintle and are arranged in overlappingrelation beneath the enlarged portion 29 of said pintle. The upper loop30 has its opposite side inched inwardly as shown at 32 to form a sustantially closed loop, which abuts against the enlargement 29 andprevents the detachment of the retaining device. The other loop 34 hasan open side. Connected to the ends of these loops are retaining arms 33which are disposed longitudinally of the pintle 28 in spaced relation tothe same and on opposite sides thereof. The lower ends 01 these arms areconnected by cross rods 34 arranged on opposite sides of the pintle andengaging in the hooked terminals 35 of a strap 36 located on the pintle28. This strap takes the place of the lower sets of loops employed inthe other forms of construction, but it will be noted that the pluralityof bearing arms, together with the upper set of loops is still present.No claims are made to the specific structure of this embodiment of theinvention as the same constitutes the subject-matter of a separateapplication, filed simultaneously herewith, Serial No. 450,332.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art, without further description and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction, may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination with a caster pintle, 01' a caster retaining deviceformed of a wire looped about the pintle and having retaining armsdisposed substantially lengthwise of said pintle.

2. The combination with a caster pintle,

of a caster retaining device formed of a wire and including adjacentloops extending in opposite directions about the pintle and havingretaining arms disposed longitudinally of said pintle.

3. The combination with a caster pintle, of a retaining device formed ofa single piece of wire having overlapping oppositely disposed loops thatextend in opposite directions about the pintle, and retaining devicescarried by the loops and located in spaced relation to the pintle.

4. The combination with a caster pintle, of a roller mounted on one endthereof, overlapping loops extending around the free end of the pintle,the outer ol' said loops being sub stantially closed, the inner loophaving an open side, and retaining arms carried by the loops andextending lengthwise of the pintle.

5. The combination with a caster pintle, of a retaining devicecomprising wire loops engaging the ends of the pintle, and retainingarms connecting said loops.

6. The combination with a caster pintle, of a retaining devicecomprising spaced sets of oppositely disposed loops that surround thepintle, and retaining arms connecting said sets.

7 The combination with a caster pintle, of a retaining device comprisingspaced sets of oppositely disposed loops that surround the pintle, theloops of one set being disposed in angular relation to the loops of theother set, and retaining arms connecting said sets and. disposedlongitudinally of the pintle in spaced. relation thereto.

8. The combination with a caster pintle, of a retaining device formed ofa single piece of wire and comprising sets of oppositely disposed loopssurrounding the ends of the pintle, the loops of one set having theirclosed ends engaging difi'erent sides 01' the pintle to those engaged bythe closed ends of the loops of the other set, and. retaining armsconnecting the ends of the loops of one set with the ends 01' the loopsol the other set, said arms being disposed longitudinally of the pintleon opposite sides thereof, and in spaced relation thereto.

In testimony, that I claim the foregoing as my own, I have heretoa'lliXed my signature in the presence of two witnesses.

DUNCAN A. MACOUAlG.

Witnesses:

F. A. BARTLING, Giro. A. ORTGEN.

Hit)

